| 1 | TETX | Transelectrix Technology Inc. | added 10/1987; eliminated 7/1990 | | NAKINA |
| 2 | TETX | Asea Brown Boveri, Inc. | added 7/1990; eliminated 7/1992 | | NAKINA |
| 3 | TETX | Transelectrix Technology Inc. | added 10/87; eliminated 7/90 | | NRHS |
| 4 | TETX | Asea Brown Boveri, Inc. | added 7/90; eliminated 7/92 | | NRHS |
| 5 | TETX | RETIRED 08-03-92 ATP (ASEA BROWN BOVERI, INC. [TRANSELECTRIX TECHNOLOGY INC.]) | | | PWRC |